Version:            (using KDE 4.2.1)
OS:                Linux
Installed from:    SuSE RPMs

My system is configured in English, with some Chinese locales since I live in China (for example the Yuan symbol, the date format etc.).

However, I expect all written strings to be in English, since my main locale is English. But KMail's activity headers show up partially in Chinese (for days of the week like Monday, Tuesday...).

Here's my locale settings :

$>locale

LANG=en_GB.UTF-8
LC_CTYPE=en_GB.UTF-8
LC_NUMERIC=zh_CN.UTF-8
LC_TIME=en_GB.UTF-8
LC_COLLATE=en_GB.UTF-8
LC_MONETARY=zh_CN.UTF-8
LC_MESSAGES=en_GB.UTF-8
LC_PAPER=zh_CN.UTF-8
LC_NAME=zh_CN.UTF-8
LC_ADDRESS=zh_CN.UTF-8
LC_TELEPHONE=zh_CN.UTF-8
LC_MEASUREMENT=zh_CN.UTF-8
LC_IDENTIFICATION=zh_CN.UTF-8
LC_ALL=

I'll add a screenshot for clarification.